Porting a project with Entity Framework results in EF and EF Core both added

[jonlouie]

Describe the bug

When a project using Entity Framework is ported with the PA Client, it upgrades EF to version 6.3 but also adds Entity Framework Core and replaces some of the EF namespaces with EF Core namespaces. This is confusing and results in an unexpected and broken configuration.

Expected behavior

In the UI, I chose to upgrade Entity Framework to version 6.3. After porting, I expected Entity Framework 6.3 to be added to my project and fully usable.